Big Bluet - Enallagma durum (Hagen, 1861)

This is a species of concern. Please report any encounters to Odonata Central.

Range & Habitat:

Found coastally throughout the state.

Usually found in the upper tidal areas of streams and rivers. In other states it has been located inland on the grassy shores of large reservoirs

Flight Season:
Early Date: 21 May
Late Date: 2 November

Flight season charts created from records in the official database maintained by Allen Barlow.

Male Dorsal - Photo by Jim Bangma
Click on a thumbnail to view full-size photo

Aptly named, it is a BIG bluet. Similar to Familiar Bluet and Atlantic Bluet but can be usually distinguished by the blue middorsal line and the arrow shaped black markings on the abdomen. The postocular spots are small and connected to the occipital bar. Caution - some populations are quite small in spite of the name, but the field marks should separate them from the similar species.


Conservation Status:
State: S2S3 Rare to imperiled in New Jersey
Global: G5 Secure globally, but possibly rare in parts of its range